Based on the Graphene ecological EOS3.0 technology, Ethereum's greatest advantages and corresponding mathematical algorithms, the COC platform makes distributed encrypted records of human learning behavior and work experience to ensure the authenticity of data! The data formed through this has significant practical value for society. The establishment of the COC platform will accelerate the construction and improvement of the education public chain, forming a global large-scale super node, achieving high-quality, efficient, and zero distance course sharing and educational mutual recognition, allowing high-quality education to benefit thousands of households, promoting social integrity and educational innovation....